Initial beacon node setup.

- Add network crate.
- Add sync crate.
- Add version crate.
- Add lighthouse configuration.
- Add network configuration.

beacon_node/src/run.rs

@@ -0,0 +1,54 @@
+use crate::config::Config;
+use crate::error;
+use crate::rpc::start_server;
+use beacon_chain::BeaconChain;
+use bls::create_proof_of_possession;
+use db::{
+    stores::{BeaconBlockStore, BeaconStateStore},
+    ClientDB, DBType, DiskDB, MemoryDB,
+};
+use fork_choice::{BitwiseLMDGhost, ForkChoiceAlgorithm};
+use futures::sync::oneshot;
+use network::NetworkConfiguration;
+use slog::{error, info};
+use slot_clock::SystemTimeSlotClock;
+use std::cell::RefCell;
+use std::sync::Arc;
+use tokio::runtime::{Builder, Runtime, TaskExecutor};
+use types::{ChainSpec, Deposit, DepositData, DepositInput, Eth1Data, Hash256, Keypair};
+
+pub fn run_beacon_node(config: Config, log: &slog::Logger) -> error::Result<()> {
+    let mut runtime = Builder::new()
+        .name_prefix("main-")
+        .build()
+        .map_err(|e| format!("{:?}", e))?;
+
+    // Log configuration
+    info!(log, "";
+          "data_dir" => &config.data_dir.to_str(),
+          "port" => &config.net_conf.listen_port);
+
+    // run service until ctrl-c
+    let (ctrlc_send, ctrlc) = oneshot::channel();
+    let ctrlc_send_c = RefCell::new(Some(ctrlc_send));
+    ctrlc::set_handler(move || {
+        if let Some(ctrlc_send) = ctrlc_send_c.try_borrow_mut().unwrap().take() {
+            ctrlc_send
+                .send(())
+                .expect("Error sending termination message");
+        }
+    });
+
+    let executor = runtime.executor();
+
+    start(config, log, executor);
+
+    runtime.block_on(ctrlc);
+
+    info!(log, "Shutting down.");
+    //TODO: handle shutdown of processes gracefully
+
+    Ok(())
+}
+
+fn start(config: Config, log: &slog::Logger, executor: TaskExecutor) {}